691 LOCK SYSTEM

Operation and Installation Instructions

READ GENERAL INSTALLATION GUIDELINES SHEET (FORM NO. 81-600-001) BEFORE PROCEEDING.

1. The MICO 691 System is a supplemental safetydevice which provides additional brake holdingaction when used with existing vehicle parkingbrake. It is not for dynamic service braking.

2. The 691 System must be used in combination withan audible and/or visual alarm as a warning tosignal the user of any loss of brake system pres-sure. Do not disconnect warning devices.

3. All lines, fittings and surrounding areas must becleaned of dirt or road residue before any lines orfittings are disconnected. Special care must betaken so dirt and road residue are not allowed toenter the hydraulic brake system. This can con-taminate the system and interfere with properoperation of brakes and MICO 691 System.

4. Follow procedures outlined in Vehicle Manufac-turer’s Service Manual or SAE Standards whenmaking new connections or adding to existingbrake systems. Use only steel brake tubing con-forming to SAE specifications.

5. Vehicle Brake System: Always use clean fluidconforming to vehicle manufacturer’s recommen-dations. 691 Power Unit: See BEFORE

PROCEEDING, page 3 for proper fluid type.Improper or contaminated fluid may cause gummydeposits, softening and swelling of rubber seals,and may render the 691 System inoperative.Such a condition must be corrected immediately.

6. Do not use sealants, tapes, teflon or cementcompounds on any connections or fittings. Thesesealants or compounds can contaminate thehydraulic brake system and interfere with theoperation of brake components or MICO 691System.

7. All fittings and connections must be in goodcondition and properly torqued.

8. Brake hoses, brake lines, MICO 691 System,brake components, cylinders, and all fittings mustbe routinely inspected for leaks, damage or wear.Proper fluid levels must be maintained. In theevent of any loss of fluid, brake system must becarefully inspected for leaks.

9. When installation of MICO 691 System is com-plete, 691 System and brake system must bebled of air. Bleed MICO 691 System according toprocedures outlined in this manual. Bleed brakesystem according to vehicle manufacturer’srecommendations.

10. The self-adhesive warning labels, page 1,accompanying each MICO locking device mustbe affixed in the vehicle cab in view of operator.

11. Keep this manual in the cab of the vehicle afterinstalling the 691 System.

MICO could not possibly know of and give advice with respect to all conceivable applications in which this product may be used and the possible hazards and/orresults of each application. MICO has not undertaken any such wide evaluation. Therefore, anyone who uses an application which is not recommended by themanufacturer, first must completely satisfy himself that a danger will not be created by the application selected, or by the particular model of our product that isselected for the application.

MICO has made every attempt to present accurate information in catalogs, brochures and other printed material. MICO can accept no responsibility for errorsfrom unintentional oversights that may exist. Due to a continuous program of product improvement, materials, specifications, and product documentation aresubject to change without notice or obligation.

Form No. 81-690-032 Revised 2007-09-06 www.mico.com

MICO is a registered trademark of MICO, Inc. MICO is registered in the U.S. Patent and Trademark Office as well as in Australia, Canada, Indonesia, Japan, Peoples Republic of China, South Korea, and the European Community.

Innovative Braking and Controls Worldwide

MICO, Incorporated1911 Lee Boulevard / North Mankato, MN U.S.A. 56003-2507Tel: +1 507 625 6426 Fax: +1 507 625 3212

Page

SELF ADHESIVE LABELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

PRINCIPLE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

INSTALLING A 691 SYSTEM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

IDENTIFY YOUR BRAKE SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

DIMENSIONAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Actuator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Power Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Control Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

PLUMBING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Single 691 Brake Lock System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7Dual 691 Brake Lock System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73-Channel Anti-Lock 691 Brake Lock System. . . . . . . . . . . . . . . . . . . . . . . 84-Channel Anti-Lock 691 Brake Lock System. . . . . . . . . . . . . . . . . . . . . . . 8

WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Wiring Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Connecting External Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Connecting the Vehicle Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Connecting Power for the Control Module . . . . . . . . . . . . . . . . . . . . . . . . 9

BLEEDING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Tips on Bleeding Brake Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Bleeding Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-11

HORN WARNING CIRCUIT TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

691 OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Using 691 as a Lock System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Using 691 as an Interlock. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

691 System Installation Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . (Insert)

BRAKE LOCK APPLICATIONS (Wiring Diagram) . . . . . . . . . . . . . . . . . . . . 14

INTERLOCK APPLICATIONS (Wiring Diagram) . . . . . . . . . . . . . . . . . . . . . 15

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16-18

691 MODEL NUMBERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-20

691 ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Table of Contents

MICO, Inc. (1) Form No. 81-690-032 Revised 2007-09-06

THIS NOTICE MUST BE AFFIXED ON DASH IN VIEW OF OPERATOR

Operator must read andunderstand Warnings and

Operating Instructions beforeusing vehicle

(Form no. 81-690-032).

691 Brake LockTO LOCK:1. Set parking brake2. Move lock switch to LOCK position

TO RELEASE:1. Move lock switch to RELEASE position2. Release parking brake

THIS NOTICE MUST BE AFFIXED ON DASH IN VIEW OF OPERATOR

This vehicle is equipped with 691 Brake Lock System.

Operator must read and understand warnings andoperating instructions before using vehicle (Form no.81-690-032) .

Do not use 691 Brake Lock in place of original equip-ment parking brake.

Always apply parking brake and other provided hold-ing devices when using 691 System.

Do not use 691 Brake Lock for overnight or prolongedparking.

Release 691 Brake Lock before moving vehicle.

691 Brake Lock and warning circuit are disabled ifbattery power is lost or disconnected.

WARNINGSerious injuryor death canoccur if theseinstructions arenot followed

PREVENTROLLAWAY

!

THIS NOTICE MUST BE AFFIXED ON DASH IN VIEW OF OPERATOR

Operator must read and understand warningsand operating instructions before using vehicle(Form no. 81-690-032).

This vehicle is equipped with a 691 Brake LockSystem that is activated by a remote input.

Unintended operation of the remote input willcause the brakes to apply or release withoutwarning.

The operator must understand the function ofthe remote inputs.

Be aware of all conditions that will cause the691 Brake Lock System to activate or deacti-vate without user intervention.

Serious injury or death can occur ifthese instructions are not followed.

WARNING!

NOTEAll 691 models include the self adhesive labels shown below. Determine which labels are used in your application.

SELF ADHESIVE LABELS

Use in all applicationsusing a user interface.

Use in all applications.

Use in all applications where the691 System is remotely activated.

Form No. 81-690-032 Revised 2007-09-06 2 MICO, Inc.

Vehicles today have two separate brake systems. One isthe service brake system and the other is the parkingbrake system. The service brake system is used to slow orstop a vehicle during normal operation. The parking brakesystem is usually cable operated and used to hold thevehicle stationary while parked.

Experience has shown that some vehicle applications re-quire more brake holding capacity than provided by prop-erly maintained parking brakes. The MICO 691 BrakeLock System uses the vehicle service brakes to supple-ment the parking brake. The 691 System provides pres-sure to the service brake system in the same manner aswhen the vehicle operator presses on the brake pedal.

The 691 also provides external inputs which can activatethe system without direct operator interjection.

The 691 Brake Lock System consists of:

The Control Module and User Interface(Figure 1)

The control module controls operation of the systemthrough the user interface or remote activation. Theuser interface incorporates a manually activated switch,audible alarm, and "locked" lamp.

The Power Unit (Figure 2)

The power unit uses a 12 volt DC pump to producepressure in the vehicle service brake system to lockthe brakes. The pump reverses flow to release lockingpressure.Two pressure switches are located on the power unit.The pressure switches sense the pressure that thepower unit is producing. The high pressure switchstarts and stops the pump while pressurizing the sys-tem. The low pressure switch starts and stops thepump while releasing pressure from the system.Although the power unit contains a built in fluidreservoir, a remote reservoir is available as an optionfor special applications. Refer to 691 Accessories charton page 19.

The Actuator (Figure 3)

The actuator is a mechanical device that links thehydraulics of the 691 System to the vehicle servicebrake system. The actuator separates the 691 Systemfluid from the vehicle service brake system. Variousactuators are available for use in different types ofservice brake systems.

FIGURE 1

FIGURE 3

1. When the 691 System is activated, the control modulestarts the power unit pumping fluid into the actuator(s).As the actuator(s) become pressurized they isolate thevehicle master cylinder and pressurize the servicebrakes.

When lock pressure is reached, the high-pressureswitch signals the control module to stop the pump.

While the pump is stopped, locking pressure is held inthe brake system. If locking pressure drops, the highpressure switch signals for the power unit to turn "on"and restore locking pressure.

2. When the 691 System is deactivated, the pumpreverses and releases pressure. The actuator releasespressure from the brakes and opens the ports to thevehicle master cylinder. When locked pressure returnsto zero PSI a signal from the low-pressure switchstops the pump.

INTRODUCTION

PRINCIPLE OF OPERATION

NOTEBrake System fluid and 691 Systemfluid always remain isolated fromone another.

FIGURE 2

Control Module

User Interface

MICO, Inc. 3 Form No. 81-690-032 Revised 2007-09-06

There are four steps to installing the 691 System.1. Mounting2. Plumbing3. Wiring4. Bleeding

The 691 System must only be installed by someone withgood working knowledge of automotive brake and electri-cal systems.It is important that the installer of the 691 System under-stands fluid types used in various 691 Systems. Read andunderstand this instruction manual before installing the 691Brake Lock System.

Brake System FluidFor all 691 installations the vehicle’s brake systemfluid does not change. Vehicles currently usingbrake fluid in the brake system will continue to usebrake fluid. Vehicles currently using mineral basehydraulic oil in the brake system will continue to usemineral base hydraulic oil.

691 System FluidThe two 691 Power Unit designs, DOT 5 silicone fluid(SF) and mineral base hydraulic oil (HO), assure sealcompatibility with your existing brake system.NOTE: Power unit and brake system fluids do notbecome intermixed when a 691 System is installed.The 691 Actuator(s) isolate the 691 System fluidfrom the brake system.

BEFORE PROCEEDING:

1. Identify your vehicle brake system. See pages3 & 4.

2. Be sure you have the correct 691 model numberand it contains all the parts. Refer to Table 1 (pages19 & 20).

All vehicles currently using automotive brakefluid (DOT 3, 4, 5 or 5.1) in the brake system mustuse the 691 model numbers designated (SF). Allvehicles currently using mineral base hydraulic oil inthe brake system must use the 691 model numbersdesignated (HO).

3. Check brake pedal height and feel. With the vehiclerunning, push on the brake pedal until there is nomore forward movement. Measure and record thedistance from pedal to floor. Brake pedal height and"feel" will be the same after the 691 System is in-stalled, refer to Figure 4.

FIGURE 4

Typical hydraulic braking systems in use today varydepending on manufacturer and size of vehicle. For in-stance, a vehicle equipped with a single system may havea firewall mounted booster or possibly a frame mountedremote booster. The same holds true for the dual and splitsystems. The rear wheel anti-lock system is a dual brakesystem with an anti-lock valve installed. All-wheel anti-locksystems are defined as 3-channel or 4-channel systems

(Check the number of outlet lines from the anti-lock controlvalve). To be absolutely sure which braking system yourvehicle is equipped with, check it. Look for identifying fea-tures such as dual flex lines at rear axle or front wheels,number of master cylinder lines, anti-lock valve(s), etc.Then, compare with the circuits shown in Figures 5through 11.

Typical Single SystemOne single hydraulic system serving both front and rear brakes.Identifying Feature:1.One line from master cylinder.691 Actuator Position:

(1) Front axle (2) Rear axle (3) 4-wheel

Typical Dual System (Vertical Split)

Two independent braking systems. One system leads to the front brakes and theother system to the rear brakes.Identifying Feature:1.Two lines from master cylinder.2.Combination valve (used on some models).691 Actuator Position:

(1) Front axle (2) Rear axle� (3) 4-wheel

� Some imported vehicles use two separate air boosted master cylinders.

FIGURE 5

FIGURE 6

INSTALLING A 691 SYSTEM

IDENTIFY YOUR BRAKE SYSTEM

Form No. 81-690-032 Revised 2007-09-06 4 MICO, Inc.

Typical Split System (1 1/2 x 1/2)

Two independent braking systems. One system leads to the front and the rearbrakes and the other system leads only to the rear brakes.Identifying Feature:1.Two lines from master cylinder.2.Single hose to each front wheel.3.Two hoses to rear axle.691 Actuator Position:

(1) Front axle (2) Rear axle (3) 4-wheel

CAUTION: Whether position 2 or 3 is used, both halves of system must belocked.

FIGURE 7

FIGURE 8

Typical 3-Channel All-Wheel Anti-Lock SystemProvides braking control by way of independent anti-lock channels for each frontwheel and a third channel for both rear wheels.Identifying Feature:1.Two lines from master cylinder to anti-lock valve(s).2.One line from anti-lock valve to rear brakes.3.Separate lines from anti-lock valve to each front wheel.691 Actuator Position:

(1) Front axle (2) Rear axle (1 & 2) 4-wheel

NOTE: Some 3-channel anti-lock brake systems use two separate anti-lockvalves.FIGURE 10

Typical 4-Channel All-Wheel Anti-Lock SystemProvides braking control by way of an independent channel for each front wheeland each rear wheel.Identifying Feature:1.Two lines from master cylinder to anti-lock valve.2.Separate lines from anti-lock valve to each of the front and rear wheels.691 Actuator Position:

(1) Front axle (2) Rear axle (1 & 2) 4-wheel

NOTE: Some 4-channel anti-lock brake systems use two separate anti-lockvalves.FIGURE 11

Imported Truck 3-Channel All-Wheel Anti-Lock SystemProvides braking control by way of independent anti-lock channels for each rearwheel and a third channel for the front wheels.Identifying Feature:1.Three separate air/hydraulic brake boosters.2.One line to front brakes.3.Separate lines to each rear wheel.691 Actuator Position:

(1) Front axle (2) Rear axle (1 & 2) 4-wheel

NOTE: The anti-lock functions on air booster system, not the hydraulic side.FIGURE 9

Typical Rear Wheel Anti-Lock System (Dual Vertical Split)

Two independent braking systems. One system leads to the front brakes and theother system to the rear brakes.Identifying Feature:1.Two lines from master cylinder.2.Anti-lock control valve between master cylinder and rear wheels.691 Actuator Position:

(1) Front axle (2) Rear axle (3) 4-wheel

MICO, Inc. 5 Form No. 81-690-032 Revised 2007-09-06

Power Unit

Remote Reservoir - (optional)See 691 Accessories on page 19

DIMENSIONAL DATA

1 1/4 inch Diameter Bore Dual Actuator 1 1/4 inch Diameter Bore Single Actuator

1 3/4 inch Diameter Bore Dual Actuator 1 3/4 inch Diameter Bore Single Actuator

User Interface

millimetersinches

Control Module

PressureSwitches

CAUTION Label

Form No. 81-690-032 Revised 2007-09-06 6 MICO, Inc.

Several self adhesive labels are supplied with each 691Brake Lock. Determine which labels are used in yourapplication and affix in the vehicle cab in view of theoperator. See page 1.

Actuator1. Repeat the mounting procedures for each actuator

used in your system.2. Find a location, preferably on the frame rail away from

heat, where the actuator(s) will mount allowing easyaccess to brake lines, refer to Figure 12. The actua-tor(s) must be mounted horizontally below the level ofthe vehicle master cylinder. The bleeder screws mustbe in an upright position. Relocate the bleeder screwsas necessary to maintain upright position. Torquebleeder screws 17.6-20.3 N·m (13-15 lb·ft).

3. Using the actuator mounting brackets as a template,mark and drill four 11/32 inch diameter holes. Fabri-cated mounting brackets can be used to mount theactuator(s). The strength of fabricated brackets mustbe adequate to prevent flexing of brake lines.

4. Install the actuator using four 5/16-18UNC, grade 5,bolts, lock washers, and nuts. Torque 27.1-33.9 N·m(20-25 lb·ft).

5. Install the brass adapters from the fitting packagein the actuator ports and torque 7.9-10.2 N·m(70-90 lb·in).

Power Unit1. The power unit can be mounted horizontally in the

engine compartment, on the frame rail, or in the cab.However, it must be protected from dirt, moisture andpossible impact. Easy access to the reservoirbreather/filler plug must be maintained to allow forfilling and checking fluid level. The reservoir breatherplug must be kept in an upright position. If this is notpossible a remote reservoir can be installed, refer to691 accessories on page 19.

2. Mark and drill two 7/16 inch diameter holes 2 5/16inch apart. Fabricated mounting brackets can be used.

3. Mount the power unit using two 3/8-16UNC bolts andlock washers.

4. 691 models designated (HO) must use mineral basehydraulic oil in the power unit reservoir. 691 modelsdesignated (SF) must use DOT 5 silicone fluid in the

power unit reservoir. Check the CAUTION labelaround the power unit reservoir breather/filler plugto verify fluid type, refer to Figure 13.

Control Module1. A mounting bracket is provided with the 691 Control

Module to mount the control module directly to the691 Power Unit. See power unit dimensional drawingon page 5. The control module can be mounted on topof the power unit as shown, as well as mounted toeither side. The control module can also be mountedto position the harness connection in the oppositedirection shown.

2. When the 691 Control Module is not mounted to the691 Power Unit, an optional 11 foot long wire harness(MICO part number 32-820-022) is available fromMICO, Incorporated. See page 19 for 691 Accessories.

User Interface1. A dash mounted user interface is provided for use by

the operator in the cab. The user interface includes amanually activated switch, audible alarm, and "locked"lamp. Find a mounting location in the cab of the vehiclewhere:A. The operator has easy access to the "lock" -

"release" rocker switch.B. The "lock" lamp is visible to the operator.C. It is protected from having something spilled on it.D. There is easy routing of wires from the 691 Control

Module to the user interface.2. The user interface is not necessary for applications

where the 691 System is activated by other manualswitches or electrical interlocks.

FIGURE 12

FIGURE 13

MOUNTING

RECOMMENDED ACTUATORMOUNTING LOCATION -INSIDE OR OUTSIDE FRAME RAIL

FIGURE 14

NOTEWhen the 691 User Interface is not installed with thissystem, another visual identifier must be used to informthe operator that the 691 System is "locked". See sche-matic on page 14.

FIGURE 15

MICO, Inc. 7 Form No. 81-690-032 Revised 2007-09-06

Determine the type of brake system on your vehicle, referto pages 3 & 4. All brake systems in use today require theMICO 691 Actuator(s) be installed after the anti-lock brakevalve and combination warning valve if so equipped.Contact MICO, Incorporated if you have questions.

Single 691 Brake Lock System

1. Disconnect the existing brake line necessary to installthe single actuator. Reduce fluid loss by plugging theports. Do not loosen or remove hydraulic lines that arenot effected by the installation of the single actuator.

2. Determine the length and shape of new or modifiedbrake lines needed to install the actuator. The installermust be qualified to modify existing brake tubing, ornew factory double flared SAE approved brake linemust be used. When adding or replacing brake lines,do not use smaller diameter than existing lines. TheMICO 691 Actuator is supplied with brass adaptersdesigned to mate with 1/4 inch inverted flare tube nuts.Contact MICO, Incorporated or a local brake fittingsupplier to obtain proper fittings to install different sizelines. All new connections or modifications betweenflexing vehicle sections, such as vehicle body andframe, must be made to absorb shock and vibration.Common methods used to absorb this shock arecoiling the brake tubing or using a short length ofpurchased brake hose. Follow procedures outlined bythe vehicle manufacturer or SAE specifications.

3. Connect the upstream line coming from the vehiclemaster cylinder to the fluid inlet port on the end of thesingle actuator. Connect the downstream line going toeither the front or rear brakes from the side outlet porton the same end of the single actuator. See Figure 16.

4. Determine the shape and length of a new piece oftubing to connect the power unit and single actuator.See Figure 17.

5. Connect one end of the new tubing to the singleactuator.

6. Connect the other end of the new tubing to the powerunit. This connection can be made to either the sideor top port. Remove the plastic shipping plug from thetop port. To install line in the side port use 3/16 inchhex key wrench to move the steel plug from side portto top port. Install the remaining brass adapter fromthe fitting package in the selected port prior to con-necting the line. See Figure 18.

Dual 691 Brake Lock System

1. Disconnect the existing rear brake lines necessary toinstall the dual actuator. Reduce fluid loss by pluggingthe ports. Note which master cylinder port suppliesfluid to the front brakes and rear brakes. Do notreverse the front and rear fluid paths during theinstallation of new brake lines.

2. Determine the length and shape of new or modifiedbrake lines needed to install the dual actuator. Theinstaller must be qualified to modify existing braketubing, or new factory double flared SAE approvedbrake line must be used. When adding or replacingbrake lines, do not use smaller diameter than existinglines. The MICO 691 Actuator is supplied with brassadapters designed to mate with 1/4 inch inverted flaretube nuts. Contact MICO, Incorporated or a localbrake fitting supplier to obtain proper fittings to installdifferent size lines. All new connections or modifica-tions between flexing vehicle sections, such as vehiclebody and frame, must be made to absorb shock and

Single Brake System

FromMaster Cylinder(port not shown)

To Brakes

FromPower Unit

FIGURE 16

FIGURE 17

PLUMBING

Single Brake System with 691 System

Plug One ofThese Ports

FIGURE 18

Dual Brake Systems

Form No. 81-690-032 Revised 2007-09-06 8 MICO, Inc.

vibration. Common methods used to absorb this shockare coiling the brake tubing or using a short length ofpurchased brake hose. Follow procedures outlinedby the vehicle manufacturer or SAE specifications.

3. Connect the upstream line coming from the mastercylinder to the fluid inlet port on one end of the actua-tor. Note that the actuator is not directional and doesnot have a front and rear. Connect the downstreamline going to the rear brakes from the side outlet porton the same end of the dual actuator. See Figure 19.

4. Repeat steps 1, 2 & 3 to install the front brake lines.5. Determine the shape and length of a new piece of

tubing to connect the power unit and dual actuator.6. Connect one end of the new tubing to the dual

actuator. See Figure 20.

7. Connect the other end of the new tubing to the powerunit. This connection can be made to either the side ortop port. Remove the plastic shipping plug from thetop port of the power unit. To install line in the sideport use 3/16 inch hex key wrench to move the steelplug from side port to top port. Install the remainingbrass adapter from the fitting package in the selectedport prior to connecting the line. See Figure 21.

3-Channel Anti-Lock 691 Brake LockSystem

3 Channel Anti-lock Brake System

The 3-channel anti-lock brake system uses both a singleand a dual actuator. Follow the plumbing instructions forboth the Single 691 Brake Lock System and the Dual 691Brake Lock System to connect the appropriate lines. Toconnect the hydraulic line from the power unit to bothactuators, either a tee can be added to this line or the plugin the unused port on the pressure switch manifold can beremoved to accommodate the connection.

4-Channel Anti-Lock 691 BrakeLock System

The 4-channel anti-lock brake system uses two dualactuators. Follow the plumbing instructions for the Dual691 Brake Lock System to connect the appropriate lines.To connect the hydraulic line from the power unit to bothactuators, either a tee can be added to this line or the plugin the unused port on the pressure switch manifold can beremoved to accommodate the connection.

FromMaster Cylinder(port not shown)

FromMaster Cylinder To

Brakes

ToBrakes

FIGURE 19

FromPower Unit

Dual Brake Systems with 691 System

Plug One ofThese Ports

FIGURE 21FIGURE 20

3 Channel Anti-lock Brake System with 691 System

4 Channel Anti-lock Brake System

4 Channel Anti-lock Brake System with 691 System

MICO, Inc. 9 Form No. 81-690-032 Revised 2007-09-06

691 Wiring Instructions(Refer to diagrams on pages 14 & 15)

The 691 System is designed for use on vehicles with a12 volt DC, negative ground system. References to"ground" in this literature refer to vehicle chassis groundwhich is connected to the negative (-) battery terminal.References to "hot" or "positive" refer to connection to thepositive (+) terminal of the 12 volt DC battery.

Optional extension harness (MICO part number32-820-022, page 19) is available from MICO, Incorpo-rated when the control module is not mounted directly tothe power unit. The supplied wire harness has beendesigned with sufficient wire length to complete mostinstallations. If additional wire is necessary, be sure to usethe proper gauge.

When making wire connections, soldering and sealing withadhesive lined heat shrink is the recommended method.

All wires that are not used must be sealed and insulated tokeep from shorting to each other or ground.

Connecting External InputsActivating the 691 System by use of the user interfacerocker switch is not always convenient. External inputs canactivate the 691 System through the use of externalswitches, dash mounted switches or relays. This providesflexibility for manual operation by the user or allows othercircuits to activate the brakes.

External Inputs

There are three external inputs available. The 691 isactivated upon receiving a signal at any of the inputs anddoes not deactivate until all input signals have beenremoved.

Two of the external inputs are activated by a positive sig-nal (+12 VDC) and the third is activated by a negative(ground) signal.

The negative input is accessed from the gray wire in themain 691 Wire Harness.

The two positive inputs are:1. The green wire in the user interface cable.

2. The brown wire in the main 691 Wire Harness.NOTE: These inputs are connected togetherinternally, so if one is receiving a positive sig-nal, the other will also have a positive signalpresent. This is commonly used to provide anexternal signal (to the brown wire) when theswitch on the 691 User Interface is activated.

To prevent unintentional activation of the 691 System,insulate and seal any of the unused wires.

Using the Brown Wire as an External OutputWhen activating the 691 System with the user interface,the brown wire can be used to signal other circuits. It willprovide a positive signal up to 1 amp of power to lights,relays, etc. If this current limit is exceeded, the output orcontrol module may operate erratically or not at all.

*NOTE: The brown wire will not provide an outputwhen the 691 System is activated by the external inputof the gray wire. This is an inherent design to provideprotection from improper wiring.

Connecting the Vehicle HornThe yellow 691 harness wire must be connected to a hornor other suitable warning device for your application. Theyellow wire sends a ground signal to sound the horn whennecessary.

1. On most vehicles the best way to connect this wirewithout adding a relay is to find the horn wire fromthe horn switch in the steering wheel. This switchtypically grounds this wire to sound the horn, splic-ing in the yellow wire at this point is all that isnecessary.

2. If splicing into the horn switch wire is not convenient,add a relay that is switched by the ground signal fromthe yellow wire and that connects the appropriatesignal directly to the horn itself.

The yellow wire will provide a ground of up to 1amp to drive a warning device. If this current limit isexceeded or if the yellow wire is connected improper-ly, the warning device or control module may operateerratically or not at all. Be sure to check for properoperation of the horn circuit on a regular basis. Seepage 11, "HORN WARNING CIRCUIT TEST".

Connecting Power for the Control Module1. Connect the black wire directly to battery negative or

equivalent ground. This wire carries the full current ofthe 691 System and must have a good ground. Ifadditional wire is necessary for this connection it mustbe a minimum of 14 gauge wire.

2. Connect the red wire to a 30 amp fuse which isconnected directly to battery positive. This wire alsocarries full 691 System current. Do not connect thisthrough any auxiliary wiring. Do not use a slow blowfuse or circuit breaker.

Power is supplied to the 691 Control Module at all times.To prevent unintended actuation of the 691 System, besure the "lock" - "release" switch (if applicable) is in the"release" position.

Do not operate the 691 Power Unit without first filling thepower unit reservoir with proper fluid.

WIRING

NOTEAll positive connections to the battery must be madethrough a high quality, properly rated fuse. Do not use aslow blow fuse or circuit breaker.

If the gray wire is allowed to short to ground, the vehiclebrakes will apply.

Form No. 81-690-032 Revised 2007-09-06 10 MICO, Inc.

All electrical connections must be completed and thepower unit reservoir filled with proper fluid before bleeding.The hydraulic brake system must be bled whenever anyline has been disconnected. Although we recommend theuse of pressure bleeding equipment when bleeding thesystem, some vehicle manufacturers do not advise certainbleeding methods. Refer to Vehicle Manufacturers bleed-ing recommendations. When pressure bleeding, use asystem pressure of 1.72-2.07 bar (25-30 PSI).

Tips on Bleeding Brake Systems1. Patience is often necessary. Brake fluids can be easily

aerated by being forced through tubes too fast oragitating them. Once brake fluid has been aerated, thebest way to get the air back out is to let it sit. Severalhours or overnight may be necessary.

2. While bleeding, make every effort to move the fluidslowly. This is especially important when applying thebrake pedal and when opening bleeder screws.

3. Avoid rapid pumping of the brake pedal as it cancause the fluid to become aerated.

4. Always wear safety glasses and be cautious whenopening bleeder screws with any pressure applied. Airpockets will shoot the fluid out at a rapid rate.

5. Connect a length of poly-style air line from the bleederscrew into a container to recapture the fluid during thebleeding process.

6. In some cases, gravity bleeding is the best form ofbleeding.

7. Start bleeding process at the actuators and worktoward the foundation brakes.

8. Even when the brake system seems to be well bled, itmay still contain small amounts of air. We recommendre-bleeding the brake system after the vehicle hasbeen parked overnight.

Bleeding Procedures

1. Disconnect the vehicle horn and other warningdevices.

2. Be sure the 691 Power Unit reservoir remains filledwith the proper fluid during entire bleeding process.Check the CAUTION label on the 691 Power Unitreservoir for proper fluid type.

3. Make sure the vehicle master cylinder reservoir is fullof fluid specified by the vehicle manufacturer.

4. Gravity Bleed - After the initial installation, DO NOTapply the brake pedal. Remove the cap from themaster cylinder reservoir. One at a time, open eachbleeder screw in the vehicle brake system beginningwith bleeder screws on the actuators and movingoutward to the foundation brakes. NOTE: In somesituations, to save time, all bleeder screws may beopened simultaneously. Do not deplete reservoirfluid level. When a steady stream of fluid is present,close the bleeder and proceed to the next. If gravityflow is not obtained within 5 minutes, proceed to nextstep. (Also check for blocked or crimped lines, orloops in tubing where air may be trapped).

5. Manual Bleed - Manually bleed the brakes, depress-ing and releasing brake pedal slowly and to dispersefluid through the brake system without agitating it. Donot depress pedal when bleeder screw is closed. Donot release pedal when bleeder screw is open. Bleed691 Actuators first. After actuators are bled, continueby bleeding foundation brakes.A. Open bleeder screw, then slowly apply the pedal

to the limit of its stroke.B. Close the bleeder and slowly release the pedal.C. Repeat this process multiple times at each bleed

point without pumping the pedal in-between.

BLEEDING

Vehicle Brake System: Always use clean fluid conform-ing to vehicle manufacturer’s recommendations.

691 Power Unit: Check the CAUTION label on the691 Power Unit reservoir for proper fluid type. Referto Figure 13.

Brake SystemBleed Point

Brake SystemBleed Point

FIGURE 22

NOTETo assure successful brake system bleeding, completeall bleeding procedure steps in the order that they arelisted.

MICO, Inc. 11 Form No. 81-690-032 Revised 2007-09-06

6. Pressure Bleed - There are two options for pressurebleeding the brake system, either using a commercialpressurized bladder type bleeder or by activating the691 Power Unit.

Using commercial bleederFollow manufacturer's instructions.Using 691 Power UnitA. Activate the 691 System.

B. Starting at the actuators and moving outward tofoundation brakes, open bleeder screw 1/2turn. The 691 Power Unit will run with the re-lease of pressure and will stop automaticallywhen the actuator reaches the end of its stroke.Most air will come out at end of the actuatorstroke.

C. After power unit stops running, close thebleeder screw.

D. Deactivate the 691 System. After 691 PowerUnit stops running, slowly depress and releasebrake pedal 3 to 5 times or until a firm pedal isachieved. This step is to replenish the actua-tors. NOTE: The 691 Power Unit will runduring first brake application.

E. Be sure the 691 Power Unit reservoir andvehicle master cylinder reservoir remain filledwith proper fluid.

F. Repeat steps A through E at each bleed pointunti all air is purged before switching to the nextbleed point.

G. After the above steps are completed, check tosee if brake pedal height and "feel" are thesame as before the 691 System was installed.If the pedal does not "feel" as firm as before, letthe vehicle sit for several hours or overnightand repeat pressure bleeding.

7. Activate the 691 System. Open bleeder screw 1/4turn. See Figure 23. Close bleeder screw when asteady stream of fluid is present.

8. Reconnect horn or other warning devices.

The 691 Control Module provides two alarm wires: "directalarm" and "delayed alarm". The "direct alarm" wire is thewhite wire in the User Interface cable. It provides a groundsignal whenever the system is pressurizing. It activates theUser Interface audible alarm. The "delayed alarm" wire,the yellow wire in the main 691 wire harness, is alsoreferred to as the horn wire. It provides a ground signal ifthe system takes longer than nine seconds to initially pres-surize, or anytime the system is re-pressurizing.

The yellow wire must be connected to the vehicle's horn orto a form of warning device that will guarantee that theoperator is aware that the system is re-pressurizing.

The horn warning circuit must be tested on a regular basis.

After the system has been activated and is locked,momentarily unplug the 2-wire (black & white) connectorleading to pressure switch #2 (stamped "1-800"). Whileunplugged, the horn will activate.

If the horn does not activate during this test, determine thecause of the problem and correct before using the 691Brake Lock System.

Using 691 as a Lock System(Only units with 691 User Interface)

To Activate Lock System1. Bring vehicle to a complete stop.2. Set mechanical parking brake.3. Move the user interface lock/release switch to the

"lock" position.4. User Interface alarm will sound and then deactivate

after reaching locking pressure.5. The "locked" indicator lamp will come on after locking

pressure is reached.6. Apply other provided holding devices.

Be careful when opening the bleeder screw, it will be un-der high pressure. Wear safety glasses.

Power UnitBleed Point

Power UnitBleed Point

FIGURE 23

Before moving the vehicle, a firm pedal must be achievedwhen the 691 System is deactivated. If a firm pedal is notachieved, repeat bleeding procedure for the 691 Systemand the service brake system until a firm pedal isachieved. Make several brake applications with vehiclestationary and check fittings for leaks.

HORN WARNING CIRCUIT TEST

Do not operate power unit without first filling withproper fluid.

691 OPERATING INSTRUCTIONS

NOTEIf pressure drops below required system pressure, the"locked" indicator lamp will go off and user interfacealarm will activate. This process may take only a fractionof a second.

If user interface alarm does not sound or fails to deacti-vate or if the "locked" indicator lamp does not remain on,discontinue use of the 691 Brake Lock System. Deter-mine the cause of the problem and correct before using.

Form No. 81-690-032 Revised 2007-09-06 12 MICO, Inc.

To Deactivate Lock Device1. Disengage other provided holding devices.2. Switch the user interface to "release" position. The

"locked" indicator lamp will deactivate and the powerunit will return brake system to static system pressure.

3. Release mechanical parking brake.

Using 691 as an Interlock

To Activate1. Bring vehicle to a complete stop.2. Set mechanical parking brake.3. Satisfy the conditions that activate remote input.

To Deactivate1. Disengage other provided holding devices.2. Deactivate remote input.3. Release mechanical holding devices.

NOTEThe 691 Interlock can be activated by the rocker switch(if applicable) whether the vehicle’s ignition is on or offas long as the battery connection exists.

NOTETo release the brakes in case of an electrical failurecomplete the following steps:

A. Remove 691 System fuse.B. Apply other provided holding devices and

mechanical parking brake to keep the vehiclefrom rolling.

C. Release residual pressure from 691 System bycarefully loosening bleeder screw nearest thepower unit inlet port of 691 Actuator. Be carefulwhen opening the bleeder screw, it may be underhigh pressure.

D. Disengage other provided holding devices.

E. Release mechanical parking brake.

MICO, Inc. 13 Form No. 81-690-032 Revised 2007-09-06

NOTES

691 System Installation ChecklistNOTE: As you install the 691 System complete this check list. Upon completion of the 691 installation,retain this checklist with the 691 Operation and Installation Manual.

Date installed:_______________ Name of person(s) installing: ______________________________________

Vehicle make:______________________________Model: _______________________Year: _______________

Vehicle I.D. number: _________________________________________________________________________

Model number of 691 System installed: _________________________________________________________

� Yes � No 1. Is the 691 Power Unit mounted upright and level?

� Yes � No 2. Is the power unit breather plug clean and away from contaminants?

� Yes � No 3. Can the fluid in the power unit reservoir be easily checked?

� Yes � No 4. Is the actuator(s) mounted at a lower level than the vehicle master cylinder?

� Yes � No 5. Is the actuator mounted horizontally level with bleeder screws facing up?

� Yes � No� N/A

6. Is the user interface (if used) mounted where it can be easily seen and away from where it will getspilled on?

If you have checked "no" in any of the above boxes, determine the reason and correct.

Complete this section after Mounting the 691 System

� Yes � No 1. Are all fluid lines properly connected as shown?

� Yes � No 2. Is the unused port on the power unit pump manifold properly plugged?

� Yes � No 3. Have all upward "U" shapes in the fluid lines where air can be trapped beeneliminated?

� Yes � No 4. Have fluid line connections between flexing vehicle sections been made using coiledtube or brake hose that will absorb shock?

� Yes � No 5. Is there a proper fluid level of clean appropriate fluid in the power unit reservoir orremote reservoir?

� Yes � No � N/A 6. If an optional remote reservoir is used, was the power unit reservoir topped off first?

� Yes � No 7. Is the vehicle master cylinder reservoir at the full level with proper fluid?

Plug One ofThese Ports

FromMaster Cylinder(port not shown)

FromMaster Cylinder(port not shown)

FromMaster Cylinder

FromPower Unit

FromPower Unit

ToBrakes

To Brakes

ToBrakes

If you have checked "no" in any of the above boxes, determine the reason and correct.

Complete this section after Plumbing the 691 System

� Yes � No 1. Are the wires protected from being hit or kicked and not hanging loose or pulled tootight?

� Yes � No � N/A 2. If additional wire was added, is it the correct gauge and color as indicated in the 691Operation and Installation Manual?

� Yes � No 3. Trace each wire, are all wires either connected to something or properly capped off?

� Yes � No 4. Did the horn sound during the HORN WARNING CIRCUIT TEST as indicated in the691 Operation and Installation Manual?

� Yes � No � N/A 5. If the gray wire is connected to an input, does it work properly?

� Yes � No � N/A 6. If the brown wire is connected to an input, does it work properly?

� Yes � No � N/A 7. If the brown wire is connected to an output, does it work properly?

� Yes � No � N/A 8. If the brown wire is connected to both an input and output, do they work properly?

� Yes � No 9. Is the red wire connected directly to positive battery through a 30 amp fuse and not acircuit breaker?

If you have checked "no" in any of the above boxes that apply to your application, determine the reason and correct.

Complete this section after Wiring the 691 System

� Yes � No 1. Have the warning labels been installed in the vehicle cab in view of the operator?

� Yes � No 2. Activate the 691 System. Does the power unit run for approximately 4 seconds?

� Yes � No 3. Deactivate the 691 System. Does the power unit run for approximately 6 seconds?

� Yes � No 4. Remove the cover from the vehicle master cylinder reservoir and activate the 691 System.There may be an initial swirl but the fluid level will remain the same unless the system has beenimproperly plumbed. Is the fluid level remaining the same?

� Yes � No 5. Is the 691 Operation and Installation Manual stored in the cab of the vehicle?

If you have checked "no" in any of the above boxes, determine the reason and correct.

Complete this section after Installing the 691 System

Form No. 81-690-032 Revised 2007-09-06 14 MICO, Inc.

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MICO, Inc. 15 Form No. 81-690-032 Revised 2007-09-06

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Form No. 81-690-032 Revised 2007-09-06 16 MICO, Inc.

TROUBLESHOOTING

Before TroubleshootingUnplug wire harness connectors. Check to be sure contacts are clean and making good contact and re-connect. Check the integrity of all wiring at the connectors. Also check to be sure all unused wires areproperly capped.

LED Display

LED Display Explanation

Motor Down On when system is releasing pressure. (Remains on for three seconds after PS2 goes off).

Motor Up On when system has been activated (proper signal on +Ext or -Ext), until PS1 comes on.

+ Ext On when positive signal is present on brown harness wire and/or green user interface wire.

PS1 (lock) On when system is locked at full pressure. Receives ground signal from pressure switch #1 onwhite wire.

Alarm On when power unit is pressurizing the system. Controls user interface audible alarm.

PS2 On whenever any pressure is present in the system. Receives ground signal from pressureswitch #2 on violet wire.

- Ext On when negative signal is present on gray harness wire.

Delay Alarm(horn output)

Comes on 9 seconds after activating the system if full system pressure has not been attained.Also comes on anytime the power unit runs to repressurize the system.

The input LED's should be on when receiving their respective signal and off when not. Replace the 691 ControlModule when this is not observed.

MICO, Inc. 17 Form No. 81-690-032 Revised 2007-09-06

Situation Cause/Solution(Test in order indicated)

When the 691 System is activated,the brakes will not lock-up and thepower unit does not run.

1. No electric power.Check the battery, fuse, and wiring connections.

2. High Pressure Switch is inoperative.Activate the 691 System. If "PS1 (lock)" LED is on, unplug pressure switch 1.

If pump runs, replace pressure switch 1 (high pressure switch) or check for a

short to ground in the wiring.

3. The Power Unit or Control Module is inoperative.Activate the 691 System. If "Motor Up" LED is on, check for 12 Vdc at the

power unit connector. Unplug the power unit and attach a voltmeter (+ to

blue, - to green) to the connector leading to the control module. If 12 Vdc is

present, replace the power unit. If 12 Vdc is not present, replace the control

module.

4. The Control Module is not receiving an input signal.Activate the 691 System. Check "+ Ext" and "- Ext" LED's. If neither are on,

check that a ground signal is present at the gray lead in the main wiring har-

ness, or the green lead from the user interface; or that a positive signal is

present on the brown wire in the main wiring harness. If not, determine the

reason and correct.

When the 691 System is activated,the brakes will not lock-up and thepower unit continues to run.

1. The fluid level in the reservoir is low.Deactivate the 691 System. Verify that the power unit is mounted level.

Remove the reservoir breather/filler plug and fill the reservoir with proper fluid

to within 1/4 inch of top. Reinstall breather/filler plug.

2. Hydraulic leak in either the 691 System or service brake system.Inspect all tubing and connections for leaks and tighten or replace as

necessary.

3. The actuator is not functioning properly.Activate the 691 System. Check the vehicle master cylinder reservoir for

excessive fluid level. This condition indicates that the seals in the actuator

are allowing 691 System fluid to leak into the vehicle service brake system.

Refer to TABLE 1 (pages 19 & 20) for the proper actuator repair kit. Replace

the seals in the actuator. NOTE: The vehicle brake system may need to

be flushed and refilled.

4. The power unit is not properly building pressure.Replace the power unit. (no test to troubleshoot this condition).

The 691 System will activate andlock-up the brakes but the powerunit keeps running.

1. High pressure switch is inoperative.Active the 691 System . If "PS2" LED is off, replace pressure switch 1

(high pressure switch).

The power unit does not operate torelease the brakes when the 691System is deactivated.

1. No electric power.Check the battery, fuse, and wiring connections.

2. Low pressure switch is inoperative.Deactivate the 691 system. If "PS2" LED is off, replace pressure switch 2

(low pressure switch).

3. The power unit or control module is inoperative.Deactivate the 691 System. If the "Motor Down" LED is on, check for

12 Vdc at power unit connector. Unplug power unit and attach a voltmeter

(- to blue, + to green) to the connector leading to control module. If 12 Vdc is

present, replace the power unit. If 12 Vdc is not present, replace control

module.

The brakes release but the 691Power Unit does not stop run-ning.

1. Low pressure switch is inoperative.Deactivate the 691 System. If the "PS2" LED is on, replace pressure switch 2

(low pressure switch).

2. The control module is inoperative.Deactivate the 691 System. If "Motor Down" LED is off, replace the control

module.

Form No. 81-690-032 Revised 2007-09-06 18 MICO, Inc.

NOTES

The 691 System and "Motor Up"LED come on unexpectedly withoutbeing activated.

1. The control module is receiving false signals.Be sure stray signals are not being introduced into the external inputs. If the

gray wire is not connected to an external input, ensure that it is capped off

and not shorting to ground inadvertently. NOTE: While deactivated, occa-

sional operation of power unit and "Motor Down" LED is normal to

relieve pressure caused by thermal expansion of fluid in the power unit.

While the 691 System is activated,the power unit and horn activateintermittently.

1. Change in temperature has caused the system to contract and reducebrake system pressure.

The power unit runs briefly to restore brake system pressure to the original

lock-up pressure. This is considered normal operation as fluid temperature

changes.

2. The service brake system or 691 System has air in it.Bleed service brakes and 691 System.

3. Hydraulic leak in either the 691 System or service brake system.Inspect all tubing and connectors for leaks and tighten or replace as

necessary.

4. The power unit is not functioning properly.Replace the power unit. (No test to troubleshoot this condition).

MICO, Inc. 19 Form No. 81-690-032 Revised 2007-09-06

691 MODELS AND REPLACEMENT PARTS

Part DescriptionNumber02-600-038 Remote Reservoir Kit for Silicone Fluid Models

02-600-049 Integral Reservoir Kit for All Type Fluid Models

32-820-022 11 foot long Extension Harness from Power Unit to Control Module

691 ACCESSORIES

TABLE 1

SystemModel

NumberDescription

691Fluid

VehicleFluid

Power Unit#1 - HighPressure

Switch Kit

#2 - LowPressure

Switch Kit

02-691-101 Single (1 3/4*) SF SF or BF 20-410-014 02-600-051 02-600-050

02-691-102 Single (1 3/4*) HO HO 20-410-015 02-600-054 02-600-053

02-691-109 Single (1 1/4*) SF SF or BF 20-410-014 02-600-051 02-600-050

02-691-201 Dual (1 3/4*) SF SF or BF 20-410-014 02-600-051 02-600-050

02-691-209 Dual (1 1/4*) SF SF or BF 20-410-014 02-600-051 02-600-050

** 02-691-223 Dual (1 1/4*) SF SF or BF 20-410-014 02-600-051 02-600-050

*** 02-691-303 3-Channel SF SF or BF 20-410-014 02-600-051 02-600-050

**** 02-691-305 3-Channel SF SF or BF 20-410-014 02-600-051 02-600-050

*****02-691-403 4-Channel SF SF or BF 20-410-014 02-600-051 02-600-050

BF = Brake Fluid HO = Mineral Base Hydraulic Oil SF = Silicone Fluid

* Inch diameter of actuator bore.** Consists of two 1 1/4 inch diameter single actuator.*** Consists of one 1 3/4 inch diameter single actuator and one 1 1/4 inch diameter dual actuator.**** Consists of one 1 1/4 inch diameter single actuator and one 1 1/4 inch diameter dual actuator.*****Consists of two 1 1/4 inch diameter dual actuators.

Form No. 81-690-032 Revised 2007-09-06 20 MICO, Inc.

UserInterface

ControlModule

ActuatorActuator

Repair KitMain

Harness

ReservoirBreather

Plug

32-585-007 32-585-006 20-460-013 02-600-035 32-820-021 34-001-089

32-585-007 32-585-006 20-460-014 02-600-036 32-820-021 34-001-089

32-585-007 32-585-006 20-460-018 02-600-042 32-820-021 34-001-089

32-585-007 32-585-006 20-460-012 02-600-034 32-820-021 34-001-089

32-585-007 32-585-006 20-460-017 02-600-041 32-820-021 34-001-089

32-585-007 32-585-006 20-460-018 (two) 02-600-042 (two) 32-820-021 34-001-089

32-585-007 32-585-006 20-460-013 (one)20-460-017 (one)

02-600-03502-600-041

32-820-021 34-001-089

32-585-007 32-585-006 20-460-018 (one)20-460-017 (one)

02-600-04202-600-041

32-820-021 34-001-089

32-585-007 32-585-006 20-460-017 (two) 02-600-041 (two) 32-820-021 34-001-089

MICO, Inc. 21 Form No. 81-690-032 Revised 2007-09-06

NOTES

Form No. 81-690-032 Revised 2007-09-06 22 MICO, Inc.

NOTES